Finding the Third Proportional to 55,558 and 79,390.50

Step by Step Solution

1. Step 1: Write the proportion equation
   55,558 : 79,390.50 = 79,390.50 : x
2. Step 2: Convert to fraction form
   55,558/79,390.50 = 79,390.50/x
3. Step 3: Cross multiply
   55,558x = 79,390.50 × 79,390.50
4. Step 4: Simplify right side
   55,558x = 6,302,851,490.25
5. Step 5: Solve for x
   x = 6,302,851,490.25/55,558
6. Step 6: Final answer
   x = 113,446.34